Product Description

The Bosch ProTankless GWH 425 HN incorporates a revolutionary hydro-generated ignition system, allowing the water heater to operate without a standing pilot, a grid connection, or a battery. A small turbine in the water heater uses the energy from the flowing water to ignite the burner. This innovative technology is patented by Bosch. The modulating gas valve maintains a constant temperature at varying flow rates, and the average efficiency is 80%.Patented Bosch Hydro-Generated Ignition TechnologyThe Bosch engineers have proven that water can indeed make fire. The pilot is ignited by a super-concentrated spark generated by a micro-turbine. The micro-turbine is activated by a request for hot water in the house. This energy efficient technology makes the 425 HN ideal for households looking to maximize energy savings.No Electricity Required

Note: We will not be held liable for any damages, injury or death caused by proper or improper installation of hot water heaters. All water heaters of any type MUST be installed by a trained and licensed technician. See Terms and Conditions. The warranty may become void if the water heater was not installed by a professional installer. Also warranty may become void if the installer does not have the proper permits for that water heater. A plumber or installer should be consulted on what water heater model can be installed in your home or business.**

Additional Information

Weight

37 lbs

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